diff --git a/firmware/config/boards/microrusefi/board_configuration.cpp b/firmware/config/boards/microrusefi/board_configuration.cpp
index 366f4b04c5..3b082e6cd0 100644
--- a/firmware/config/boards/microrusefi/board_configuration.cpp
+++ b/firmware/config/boards/microrusefi/board_configuration.cpp
@@ -171,7 +171,6 @@ void setBoardConfigOverrides(void) {
 	// SPI for SD card
 	engineConfiguration->is_enabled_spi_3 = true;
 	engineConfiguration->sdCardSpiDevice = SPI_DEVICE_3;
-	engineConfiguration->sdCardCsPin = GPIOB_9;
 
 	engineConfiguration->spi3mosiPin = GPIOC_12;
 	engineConfiguration->spi3misoPin = GPIOC_11;
@@ -201,6 +200,7 @@ void setSerialConfigurationOverrides(void) {
 void setBoardDefaultConfiguration(void) {
 	setInjectorPins();
 	setIgnitionPins();
+	engineConfiguration->sdCardCsPin = GPIOB_9;
 
 	// MRE has a special main relay control low side pin
 	// rusEfi firmware is totally not involved with main relay control on microRusEfi board
diff --git a/firmware/config/engines/custom_engine.cpp b/firmware/config/engines/custom_engine.cpp
index 59fc61d58b..69584f7897 100644
--- a/firmware/config/engines/custom_engine.cpp
+++ b/firmware/config/engines/custom_engine.cpp
@@ -767,6 +767,7 @@ void setTest33816EngineConfiguration() {
 	engineConfiguration->mc33816_cs = GPIOD_7;
 	// green
 	engineConfiguration->mc33816_rstb = GPIOD_4;
+	engineConfiguration->sdCardCsPin = GPIO_UNASSIGNED;
 	// yellow
 	engineConfiguration->mc33816_driven = GPIOD_6;